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ZRO Ballistic Calculator
Designed with simplicity and efficiency in mind, our ballistic calculator offers a comprehensive solution to obtain accurate ballistic data for your rifles, all presented in either imperial or metric units, according to your preference.
This app uses 3 degrees of freedom (3 DOF) calculation.
All data are calculated and saved locally.

Download the Android APK


English handbooks:

French booklets:

Target A4

Tutorial for printing in real size.

Rifle Dataset

EN Rifle Dataset – Imperial
EN Rifle Dataset – Metric

3D model

Dummy rounds for 3D print.

Rifle :

Pistol :